The Intergraph SmartPlant License Manager (SPLM) manages software seats across workstations and networks. When CADWorx launches, it requests a license token from the designated SPLM license server. If you see , it generally means:
| Prevention Measure | Frequency | |---|---| | Keep SPLM updated to the latest version | Check quarterly | | Ensure automatic startup of SPLM service | After every reboot | | Maintain stable IP (static or loopback) | Set once | | Keep firewall exceptions updated | After each software update | | Monitor license seat usage on server | Weekly | | Regularly back up license.dat file | Monthly |
If you have been staring at a dialog box that reads “SPLM Error 7502: Cannot connect to license server” or “Error checking out license (7502)” , you know the frustration of being locked out of your project mid-deadline.
If the keys are expired, you must request a new license key ( .key file) from the Hexagon Asset Lifecycle Intelligence support portal. Step 4: Re-point the Client to the License Server
The occurs when the software cannot read data from the SmartPlant License Manager (SPLM) server. To resolve this, you must ensure that SPLM is properly installed and configured to connect to your license server before starting CADWorx. Recommended Troubleshooting Steps
The CADWorx SPLM Error 7502 is undoubtedly frustrating, but it is also highly resolvable with a methodical approach. In most cases, the issue comes down to a service that isn't running, a firewall that's blocking communication, or a license file that's been misconfigured.
“An error has occurred while trying to access the hardware lock. Detailed information on Error Number 7502 will appear after you click the Ok button. CADWorx and AutoCAD will now save and exit.” Common Root Causes CADWorx Hardware Lock Error 7502 | PDF - Scribd
Sometimes, the error is not a simple connectivity issue but a version mismatch or OS quirk.
Sometimes Error 7502 masks a "License Exhausted" error if the messaging is garbled.
While official documentation may categorize this error generally under "License Acquisition Failure," empirical evidence and system architecture analysis suggest that Error 7502 is fundamentally a .
SPLM (SmartPlant License Manager) is a proprietary license management system developed by Intergraph (now a part of Hexagon) for its plant design and engineering software. It is responsible for managing concurrent floating licenses for applications like , Caesar II , PV Elite , and SmartPlant 3D.
If all seats are taken or "stuck," a server-side restart of the SPLM service may be required. 🔍 Diagnostic Checklist Likely Issue "Could not read data..." Server Connection Check Server Name in SPLM Setup "Connection Refused" Service Stopped Start "SmartPlant License Manager" in Services "Socket Timeout" Network/Firewall pdlice.exe to Firewall Exceptions
If none of the above works, contact Hexagon Support with your file (found in %temp%\SPLEM_logs ). Tell them you’ve already tried steps 1-5—they’ll appreciate it.
As Hexagon actively transitions enterprise architectures to Intergraph Smart Licensing (ISL), outdated legacy SPLM keys may fail, expire, or experience software conflicts. Step-by-Step Solutions to Fix Error 7502 1. Verify and Reconfigure Client SPLM Mapping
Often, the client machine simply loses its configuration map to the server.
Once you resolve the immediate issue, implement these best practices to ensure Error 7502 never returns.